MESON Chess Problem Database

Problem Display
PID: 108283 (8/3K4/5B2/3kb3/N1qrrR2/1B3Q2/1R4n1/1n1N3b w - - 0 1)

Feher, Gyula

Hietzing Chess Club, 1931

8/3K4/5B2/3kb3/N1qrrR2/1B3Q2/1R4n1/1n1N3b

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd1
      • 2.Qxe4#
    • 1...Rd2
      • 2.Qxe4#
    • 1...Rd3
      • 2.Qxe4#
    • 1...Sd2
      • 2.Sdc3#
    • 1...Sa3
      • 2.Sdc3#
    • 1...Sc3
      • 2.Sdxc3#
    • 1...Se1
      • 2.Se3#
    • 1...Se3
      • 2.Sxe3#
    • 1...Sxf4
      • 2.Se3#
    • 1...Sh4
      • 2.Se3#
  • Keys
    • 1.Rd2!
      • threat
        • 2.Qxe4#
      • 1...Qxb3
        • 2.Qxb3#
      • 1...Bxf4
        • 2.Rxd4#
      • 1...Sxd2
        • 2.Sdc3#
      • 1...Sxf4
        • 2.Se3#
      • 1...Sc3
        • 2.Sdxc3#
      • 1...Se1
        • 2.Se3#
      • 1...Se3
        • 2.Sxe3#
      • 1...Sh4
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(e);N_GUARD,XS(A)::QAB1(D),XR(f)
    • R(e);N_GUARD::QAB1(D),XR(f)
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
    • S(c);N_GUARD::S(A)
    • S(c);N_GUARD::S(A),XS(c)
    • S(c);N_GUARD,XR(F)::S(A)
  • Actual
    • R(B);N_PINR(f),P_PINR(e)
    • Threat
      • QAB1(D),XR(f)
    • Vars
      • Q(d);N_SPINQ(d),OGATE,XB(C)::QAB(D),XQ(d)
      • B(h);N_GUARD,XR(F)::R1(B),XR(e)
      • S(a);N_GUARD,N_SPINR(e),P_SPINR(f),XR(B)::S(A)
      • S(c);N_GUARD,XR(F)::S(A)
      • S(a);N_GUARD::S(A),XS(a)
      • S(c);N_GUARD::S(A)
      • S(c);N_GUARD::S(A),XS(c)
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